Motorola HT Series Service Manual page 49

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DATA (U409 Pin 100)
CLOCK (U409 Pin 1)
CSX (U409 Pin 2)
MOD IN (U404 Pin 40)
+5V (U247 Pin 4)
5,20,34,36
(U248 Pin 5)
Reference
Oscillator
12.8V
Voltage
Multiplier
7
DATA
8
CLK
9
CEX
10
MODIN
13,30
V , DC5V
CC U251
V , 3.3V
Low Voltage
DD
Fractional-N
23
XTAL1
Synthesizer
24
XTAL2
25
WARP
32
PREIN
47
VCP
VMULT2 VMULT1
14
3.3Vp-p
3.3Vp-p
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4
LOCK
19
FREFOUT
6,22,23,24
GND
43
IOUT
45
IADAPT
41
MODOUT
3
AUX4
2
AUX3
28
SFOUT
40
BIAS1
39
BIAS2
AUX1
15 48
Transistors
5V
Prescaler In
LOCK (U409 Pin 56)
FREF (U201 Pin 21 & U404 Pin 34)
Steering
2-Pole
Line
Loop Filter
11.0V
Dual
Transistors Voltage
Controlled
Filtered 5V
Oscillator
Dual
R405

LO RF
Injection
TX RF
Injection
(First Stage of PA)